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- #include <iostream>
- using namespace std;
- typedef long long ll;
- int main() {
- int a, b;
- cin >> a >> b;
- if(a < b) {
- swap(a, b);
- }
- int res = 2e9;
- for(int i = 0; i <= a; i++) {
- if(((a - i) % 3 != 0) and ((b + i) % 3 != 0)) {
- res = min(res, abs((b + i) - (a - i)));
- }
- }
- cout << res << endl;
- return 0;
- }
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